National Pokédex #0095 · Generation 1

Onix

Onix has a magnet in its brain. It acts as a compass so that this Pokémon does not lose direction while it is tunneling. As it grows older, its body becomes increasingly rounder and smoother.

Natural spawnRaid denEvolution chain

Quick answer

How do you get Onix?

Onix can spawn in Mushroom Fields, Deep Frozen Ocean, Frozen Ocean, and 144 other eligible biomes (Search: On land; Sky light: Dark; Ground: Natural). It appears in tier 3 raids. Check the complete conditions below; these routes reflect AshRun's installed ATMons files.

AshRun ATMons 1.3.0 · Checked 2026-10-16 · Sources & limitations

AshRun locations

How to obtain Onix

3 places to look

Where to look in the wild

Choose one location below and meet its conditions together. Separate cards are alternative routes. A rarity label describes a spawn pool, not the chance of finding one on each attempt.

Eligible biomes (147)

Mushroom Fields + 146 more

Expanded from server category: Overworld

Level14-39RarityUncommon

Search: On land
Sky light: Dark
Ground: Natural

Excluded when this matches: Biome: Deep Dark.
Excluded when this matches: Ground: Farmland.

Eligible biome

Basalt Deltas

Basalt Deltas

Expanded from server category: Nether Basalt

Level14-39RarityUncommon

Search: On land
Ground: Natural

Excluded when this matches: Ground: Farmland.

Encounter form / properties: Crystal

Eligible biome

Dripstone Caves

Dripstone Caves

Level70RarityUltra-Rare

Search: On land
Under cover
Nearby: Diamond Block

Raid den

Tier 3 · Rock

Relative boss weight 20. Defined moves: Sand Tomb, Rock Slide, Rage, Dragon Breath.

Compare raid tiers and encounters →

Before you throw a ball

Catching Onix

If you encounter a wild Onix, an ordinary throw outside battle requires your first non-fainted party Pokémon to be at least its level.

Party order matters: the game checks the first conscious Pokémon, not the highest level anywhere in your team.
With no conscious party Pokémon, this outside-battle rule allows only targets up to level 15.
A guaranteed-catch ball bypasses this ordinary level check. You can also battle a wild target and use a ball during your turn.

These rules describe wild encounters. Raids and scripted encounters may use their own capture flow. Read the catching guide and blocked-throw checklist · Checked 2026-10-16.

Base catch-rate value: 45. This is a species value, not a percentage or a promise that a particular ball will work.

Battle profile

Base stats

385 total

Type weaknesses & resistances

Damage taken by Onix with Rock / Ground typing:

Weak to: Fighting 2×Grass 4×Ground 2×Ice 2×Steel 2×Water 4×
Resists: Fire 0.5×Flying 0.5×Normal 0.5×Poison 0.25×Rock 0.5×
Immune to: Electric 0×

Unlisted move types deal normal (1×) damage. Both types are combined. Abilities, held items, moves, weather, Terastallization and form changes can alter the result.

Base stat values

Hp35

Attack45

Defence160

Special Attack30

Special Defence45

Speed70

Abilities

Rock Head
Sturdy
Weak Armor Hidden

Training

Base experience: 77
Growth: Medium Fast
EV yield: Hp: 0 · Attack: 0 · Defence: 1 · Special Attack: 0 · Special Defence: 0 · Speed: 0
Friendship: 50

Progression

Evolution & forms

Follow the requirements on each arrow, then open the next Pokémon to continue the chain. Regional and alternate forms can use different rules. Compare all evolution methods.

Evolves into

Steelix

trade it; hold Metal Coat; the held item is consumed

View Steelix →

Complete installed learnset

Moves

131 entries

Level moves (20)

Lv. 1 · Mud SportLv. 1 · TackleLv. 1 · HardenLv. 1 · BindLv. 1 · Rock ThrowLv. 1 · RageLv. 4 · Smack DownLv. 8 · Rock PolishLv. 12 · Dragon BreathLv. 16 · CurseLv. 20 · Rock SlideLv. 24 · ScreechLv. 28 · Sand TombLv. 32 · Stealth RockLv. 36 · SlamLv. 40 · SandstormLv. 44 · DigLv. 48 · Iron TailLv. 52 · Stone EdgeLv. 56 · Double-Edge

Egg moves (8)

BlockDefense CurlDragon TailFlailHead SmashRolloutRototillerWide Guard

Tm moves (61)

Ancient PowerBindBlockBody PressBody SlamBreaking SwipeBrutal SwingBulldozeCurseDigDouble-EdgeDragon DanceDragon PulseDragon TailDrill RunEarth PowerEarthquakeEndureExplosionFacadeFlash CannonGyro BallHeadbuttHeavy SlamHigh HorsepowerIron HeadIron TailMeteor BeamMud-SlapNature PowerPaybackPower ShiftProtectPsych UpRestRoarRock BlastRock ClimbRock PolishRock SlideRock SmashRock TombRolloutSandstormSand TombScary FaceScorching SandsScreechSelf-DestructSleep TalkSmack DownStealth RockStomping TantrumStone EdgeStrengthSubstituteSunny DayTauntTera BlastTormentTwister

Tutor moves (24)

Ancient PowerBindBlockBulldozeDragon PulseDrill RunEarth PowerFlash CannonHigh HorsepowerIron HeadIron TailMeteor BeamMud-SlapPower ShiftRestRock SlideRock SmashRolloutScorching SandsSleep TalkStealth RockStomping TantrumStone EdgeTwister

Legacy moves (18)

AttractBideCaptivateConfideDouble TeamFissureFrustrationHidden PowerMimicNatural GiftReturnRoundSecret PowerSkull BashSnoreSwaggerTake DownToxic

Useful extras

Drops & breeding

Stone

Quantity 1-3

Hard Stone

2.5% chance

Lagging Tail

2.5% chance

Passho Berry

2.5% chance

Egg groups: Mineral
Egg cycles: 25
Maximum drops: 6

Technical server dataRaw records, internal IDs, source files, presets, and full JSON

Source summary

Base species: Cobblemon-neoforge-1.7.3+1.21.1.jar. Installed additions: none.

Acquisition records

{
  "questGuides": [],
  "structureEncounters": [],
  "naturalSpawns": [
    {
      "id": "onix-1",
      "pokemon": "onix",
      "presets": [
        "natural"
      ],
      "type": "pokemon",
      "spawnablePositionType": "grounded",
      "bucket": "uncommon",
      "level": "14-39",
      "weight": 5.52,
      "condition": {
        "minSkyLight": 0,
        "maxSkyLight": 7,
        "biomes": [
          "#cobblemon:is_overworld"
        ]
      },
      "anticondition": {
        "biomes": [
          "#cobblemon:is_deep_dark"
        ]
      },
      "source": "Cobblemon-neoforge-1.7.3+1.21.1.jar",
      "sourceFile": "data/cobblemon/spawn_pool_world/0095_onix.json",
      "formProperties": [],
      "presetConditions": [
        {
          "preset": "natural",
          "condition": {
            "neededBaseBlocks": [
              "#cobblemon:natural"
            ]
          }
        }
      ],
      "presetAntiConditions": [
        {
          "preset": "natural",
          "condition": {
            "neededBaseBlocks": [
              "minecraft:farmland"
            ]
          }
        }
      ],
      "presetProvenance": [
        {
          "preset": "natural",
          "source": "Cobblemon-neoforge-1.7.3+1.21.1.jar",
          "sourceFile": "data/cobblemon/spawn_detail_presets/natural.json"
        }
      ],
      "effectiveCondition": {
        "minSkyLight": 0,
        "maxSkyLight": 7,
        "biomes": [
          "#cobblemon:is_overworld"
        ],
        "neededBaseBlocks": [
          "#cobblemon:natural"
        ]
      },
      "effectiveAnticonditions": [
        {
          "biomes": [
            "#cobblemon:is_deep_dark"
          ]
        },
        {
          "neededBaseBlocks": [
            "minecraft:farmland"
          ]
        }
      ],
      "resolvedBiomes": [
        "minecraft:mushroom_fields",
        "minecraft:deep_frozen_ocean",
        "minecraft:frozen_ocean",
        "minecraft:deep_cold_ocean",
        "minecraft:cold_ocean",
        "minecraft:deep_ocean",
        "minecraft:ocean",
        "minecraft:deep_lukewarm_ocean",
        "minecraft:lukewarm_ocean",
        "minecraft:warm_ocean",
        "minecraft:stony_shore",
        "minecraft:swamp",
        "minecraft:mangrove_swamp",
        "minecraft:snowy_slopes",
        "minecraft:snowy_plains",
        "minecraft:snowy_beach",
        "minecraft:windswept_gravelly_hills",
        "minecraft:grove",
        "minecraft:windswept_hills",
        "minecraft:snowy_taiga",
        "minecraft:windswept_forest",
        "minecraft:taiga",
        "minecraft:plains",
        "minecraft:meadow",
        "minecraft:beach",
        "minecraft:forest",
        "minecraft:old_growth_spruce_taiga",
        "minecraft:flower_forest",
        "minecraft:birch_forest",
        "minecraft:dark_forest",
        "minecraft:savanna_plateau",
        "minecraft:savanna",
        "minecraft:jungle",
        "minecraft:badlands",
        "minecraft:desert",
        "minecraft:wooded_badlands",
        "minecraft:jagged_peaks",
        "minecraft:stony_peaks",
        "minecraft:frozen_river",
        "minecraft:river",
        "minecraft:ice_spikes",
        "minecraft:old_growth_pine_taiga",
        "minecraft:sunflower_plains",
        "minecraft:old_growth_birch_forest",
        "minecraft:sparse_jungle",
        "minecraft:bamboo_jungle",
        "minecraft:eroded_badlands",
        "minecraft:windswept_savanna",
        "minecraft:cherry_grove",
        "minecraft:frozen_peaks",
        "minecraft:dripstone_caves",
        "minecraft:lush_caves",
        "ars_elemental:flashing_forest",
        "ars_elemental:blazing_forest",
        "ars_elemental:cascading_forest",
        "ars_elemental:flourishing_forest",
        "ars_elemental:vexing_caves",
        "ars_nouveau:archwood_forest",
        "integrateddynamics:meneglin",
        "legendarymonuments:dyna_plains",
        "legendarymonuments:plains_of_death",
        "terralith:cave/andesite_caves",
        "terralith:cave/diorite_caves",
        "terralith:cave/fungal_caves",
        "terralith:cave/granite_caves",
        "terralith:cave/infested_caves",
        "terralith:cave/thermal_caves",
        "terralith:cave/underground_jungle",
        "terralith:alpha_islands",
        "terralith:alpha_islands_winter",
        "terralith:alpine_grove",
        "terralith:alpine_highlands",
        "terralith:amethyst_canyon",
        "terralith:amethyst_rainforest",
        "terralith:ancient_sands",
        "terralith:arid_highlands",
        "terralith:ashen_savanna",
        "terralith:basalt_cliffs",
        "terralith:birch_taiga",
        "terralith:blooming_plateau",
        "terralith:blooming_valley",
        "terralith:brushland",
        "terralith:bryce_canyon",
        "terralith:caldera",
        "terralith:cloud_forest",
        "terralith:cold_shrubland",
        "terralith:desert_canyon",
        "terralith:desert_oasis",
        "terralith:desert_spires",
        "terralith:emerald_peaks",
        "terralith:forested_highlands",
        "terralith:fractured_savanna",
        "terralith:frozen_cliffs",
        "terralith:glacial_chasm",
        "terralith:granite_cliffs",
        "terralith:gravel_beach",
        "terralith:gravel_desert",
        "terralith:haze_mountain",
        "terralith:highlands",
        "terralith:hot_shrubland",
        "terralith:ice_marsh",
        "terralith:jungle_mountains",
        "terralith:lavender_forest",
        "terralith:lavender_valley",
        "terralith:lush_desert",
        "terralith:lush_valley",
        "terralith:mirage_isles",
        "terralith:moonlight_grove",
        "terralith:moonlight_valley",
        "terralith:orchid_swamp",
        "terralith:painted_mountains",
        "terralith:red_oasis",
        "terralith:rocky_jungle",
        "terralith:rocky_mountains",
        "terralith:rocky_shrubland",
        "terralith:sakura_grove",
        "terralith:sakura_valley",
        "terralith:sandstone_valley",
        "terralith:savanna_badlands",
        "terralith:savanna_slopes",
        "terralith:scarlet_mountains",
        "terralith:shield",
        "terralith:shield_clearing",
        "terralith:shrubland",
        "terralith:siberian_grove",
        "terralith:siberian_taiga",
        "terralith:snowy_badlands",
        "terralith:snowy_cherry_grove",
        "terralith:snowy_maple_forest",
        "terralith:snowy_shield",
        "terralith:steppe",
        "terralith:stony_spires",
        "terralith:temperate_highlands",
        "terralith:tropical_jungle",
        "terralith:valley_clearing",
        "terralith:volcanic_crater",
        "terralith:volcanic_peaks",
        "terralith:warm_river",
        "terralith:warped_mesa",
        "terralith:white_cliffs",
        "terralith:white_mesa",
        "terralith:windswept_spires",
        "terralith:wintry_forest",
        "terralith:wintry_lowlands",
        "terralith:yellowstone",
        "terralith:yosemite_cliffs",
        "terralith:yosemite_lowlands"
      ],
      "resolvedExcludedBiomes": [
        "minecraft:deep_dark",
        "terralith:cave/crystal_caves",
        "terralith:cave/deep_caves",
        "terralith:cave/frostfire_caves",
        "terralith:cave/mantle_caves",
        "terralith:cave/tuff_caves"
      ]
    },
    {
      "id": "onix-2",
      "pokemon": "onix",
      "presets": [
        "natural"
      ],
      "type": "pokemon",
      "spawnablePositionType": "grounded",
      "bucket": "uncommon",
      "level": "14-39",
      "weight": 1.84,
      "condition": {
        "biomes": [
          "#cobblemon:nether/is_basalt"
        ]
      },
      "source": "Cobblemon-neoforge-1.7.3+1.21.1.jar",
      "sourceFile": "data/cobblemon/spawn_pool_world/0095_onix.json",
      "formProperties": [],
      "presetConditions": [
        {
          "preset": "natural",
          "condition": {
            "neededBaseBlocks": [
              "#cobblemon:natural"
            ]
          }
        }
      ],
      "presetAntiConditions": [
        {
          "preset": "natural",
          "condition": {
            "neededBaseBlocks": [
              "minecraft:farmland"
            ]
          }
        }
      ],
      "presetProvenance": [
        {
          "preset": "natural",
          "source": "Cobblemon-neoforge-1.7.3+1.21.1.jar",
          "sourceFile": "data/cobblemon/spawn_detail_presets/natural.json"
        }
      ],
      "effectiveCondition": {
        "biomes": [
          "#cobblemon:nether/is_basalt"
        ],
        "neededBaseBlocks": [
          "#cobblemon:natural"
        ]
      },
      "effectiveAnticonditions": [
        {
          "neededBaseBlocks": [
            "minecraft:farmland"
          ]
        }
      ],
      "resolvedBiomes": [
        "minecraft:basalt_deltas"
      ],
      "resolvedExcludedBiomes": []
    },
    {
      "id": "ccc-onix-2",
      "pokemon": "onix crystal",
      "presets": [],
      "type": "pokemon",
      "context": "grounded",
      "bucket": "ultra-rare",
      "level": "70",
      "weight": 0.1,
      "condition": {
        "canSeeSky": false,
        "biomes": [
          "minecraft:dripstone_caves"
        ],
        "neededNearbyBlocks": [
          "minecraft:diamond_block"
        ]
      },
      "source": "complete-cobblemon-collection-myths-and-legends-compat-2.1.0.jar",
      "sourceFile": "data/cobblemon/spawn_pool_world/0095_onix_crystal.json",
      "spawnablePositionType": "grounded",
      "formProperties": [
        "crystal"
      ],
      "presetConditions": [],
      "presetAntiConditions": [],
      "presetProvenance": [],
      "effectiveCondition": {
        "canSeeSky": false,
        "biomes": [
          "minecraft:dripstone_caves"
        ],
        "neededNearbyBlocks": [
          "minecraft:diamond_block"
        ]
      },
      "effectiveAnticonditions": [],
      "resolvedBiomes": [
        "minecraft:dripstone_caves"
      ],
      "resolvedExcludedBiomes": []
    }
  ],
  "raids": [
    {
      "tier": "THREE",
      "type": "rock",
      "weight": 20,
      "moves": [
        "sandtomb",
        "rockslide",
        "rage",
        "dragonbreath"
      ],
      "source": "cobblemonraiddens-neoforge-0.11.7+1.21.1.jar",
      "sourceFile": "data/cobblemonraiddens/raid/boss/onix.json",
      "formProperties": [],
      "gender": null,
      "ability": null,
      "bossProperties": []
    }
  ],
  "fossils": []
}

Evolution and forms

{
  "evolutions": [
    {
      "id": "onix_steelix",
      "variant": "trade",
      "result": "steelix",
      "consumeHeldItem": true,
      "learnableMoves": [],
      "requirements": [
        {
          "variant": "held_item",
          "itemCondition": "cobblemon:metal_coat"
        }
      ]
    }
  ],
  "forms": []
}

Behavior and drops

{
  "behaviour": {
    "resting": {
      "canSleep": true,
      "light": "0-4",
      "times": [
        "any"
      ],
      "drowsyChance": 0.0014,
      "rouseChance": 0.0042
    },
    "moving": {
      "walk": {
        "walkSpeed": 0.3
      },
      "swim": {
        "avoidsWater": true,
        "canSwimInLava": true
      }
    },
    "combat": {
      "willDefendSelf": true,
      "willDefendOwner": true,
      "willFlee": false
    },
    "fireImmune": true
  },
  "drops": {
    "amount": 6,
    "entries": [
      {
        "item": "minecraft:stone",
        "quantityRange": "1-3"
      },
      {
        "item": "cobblemon:hard_stone",
        "percentage": 2.5
      },
      {
        "item": "cobblemon:lagging_tail",
        "percentage": 2.5
      },
      {
        "item": "cobblemon:passho_berry",
        "percentage": 2.5
      }
    ]
  },
  "labels": [
    "gen1"
  ]
}

Complete installed species record

{
  "implemented": true,
  "nationalPokedexNumber": 95,
  "name": "Onix",
  "primaryType": "rock",
  "secondaryType": "ground",
  "maleRatio": 0.5,
  "height": 88,
  "weight": 2100,
  "pokedex": [
    "cobblemon.species.onix.desc"
  ],
  "labels": [
    "gen1"
  ],
  "aspects": [],
  "abilities": [
    "rockhead",
    "sturdy",
    "h:weakarmor"
  ],
  "eggGroups": [
    "mineral"
  ],
  "baseStats": {
    "hp": 35,
    "attack": 45,
    "defence": 160,
    "special_attack": 30,
    "special_defence": 45,
    "speed": 70
  },
  "evYield": {
    "hp": 0,
    "attack": 0,
    "defence": 1,
    "special_attack": 0,
    "special_defence": 0,
    "speed": 0
  },
  "baseExperienceYield": 77,
  "experienceGroup": "medium_fast",
  "catchRate": 45,
  "eggCycles": 25,
  "baseFriendship": 50,
  "baseScale": 1,
  "hitbox": {
    "width": 2,
    "height": 4,
    "fixed": false
  },
  "behaviour": {
    "resting": {
      "canSleep": true,
      "light": "0-4",
      "times": [
        "any"
      ],
      "drowsyChance": 0.0014,
      "rouseChance": 0.0042
    },
    "moving": {
      "walk": {
        "walkSpeed": 0.3
      },
      "swim": {
        "avoidsWater": true,
        "canSwimInLava": true
      }
    },
    "combat": {
      "willDefendSelf": true,
      "willDefendOwner": true,
      "willFlee": false
    },
    "fireImmune": true
  },
  "drops": {
    "amount": 6,
    "entries": [
      {
        "item": "minecraft:stone",
        "quantityRange": "1-3"
      },
      {
        "item": "cobblemon:hard_stone",
        "percentage": 2.5
      },
      {
        "item": "cobblemon:lagging_tail",
        "percentage": 2.5
      },
      {
        "item": "cobblemon:passho_berry",
        "percentage": 2.5
      }
    ]
  },
  "moves": [
    "1:mudsport",
    "1:tackle",
    "1:harden",
    "1:bind",
    "1:rockthrow",
    "1:rage",
    "4:smackdown",
    "8:rockpolish",
    "12:dragonbreath",
    "16:curse",
    "20:rockslide",
    "24:screech",
    "28:sandtomb",
    "32:stealthrock",
    "36:slam",
    "40:sandstorm",
    "44:dig",
    "48:irontail",
    "52:stoneedge",
    "56:doubleedge",
    "egg:block",
    "egg:defensecurl",
    "egg:dragontail",
    "egg:flail",
    "egg:headsmash",
    "egg:rollout",
    "egg:rototiller",
    "egg:wideguard",
    "tm:ancientpower",
    "tm:bind",
    "tm:block",
    "tm:bodypress",
    "tm:bodyslam",
    "tm:breakingswipe",
    "tm:brutalswing",
    "tm:bulldoze",
    "tm:curse",
    "tm:dig",
    "tm:doubleedge",
    "tm:dragondance",
    "tm:dragonpulse",
    "tm:dragontail",
    "tm:drillrun",
    "tm:earthpower",
    "tm:earthquake",
    "tm:endure",
    "tm:explosion",
    "tm:facade",
    "tm:flashcannon",
    "tm:gyroball",
    "tm:headbutt",
    "tm:heavyslam",
    "tm:highhorsepower",
    "tm:ironhead",
    "tm:irontail",
    "tm:meteorbeam",
    "tm:mudslap",
    "tm:naturepower",
    "tm:payback",
    "tm:powershift",
    "tm:protect",
    "tm:psychup",
    "tm:rest",
    "tm:roar",
    "tm:rockblast",
    "tm:rockclimb",
    "tm:rockpolish",
    "tm:rockslide",
    "tm:rocksmash",
    "tm:rocktomb",
    "tm:rollout",
    "tm:sandstorm",
    "tm:sandtomb",
    "tm:scaryface",
    "tm:scorchingsands",
    "tm:screech",
    "tm:selfdestruct",
    "tm:sleeptalk",
    "tm:smackdown",
    "tm:stealthrock",
    "tm:stompingtantrum",
    "tm:stoneedge",
    "tm:strength",
    "tm:substitute",
    "tm:sunnyday",
    "tm:taunt",
    "tm:terablast",
    "tm:torment",
    "tm:twister",
    "tutor:ancientpower",
    "tutor:bind",
    "tutor:block",
    "tutor:bulldoze",
    "tutor:dragonpulse",
    "tutor:drillrun",
    "tutor:earthpower",
    "tutor:flashcannon",
    "tutor:highhorsepower",
    "tutor:ironhead",
    "tutor:irontail",
    "tutor:meteorbeam",
    "tutor:mudslap",
    "tutor:powershift",
    "tutor:rest",
    "tutor:rockslide",
    "tutor:rocksmash",
    "tutor:rollout",
    "tutor:scorchingsands",
    "tutor:sleeptalk",
    "tutor:stealthrock",
    "tutor:stompingtantrum",
    "tutor:stoneedge",
    "tutor:twister",
    "legacy:attract",
    "legacy:bide",
    "legacy:captivate",
    "legacy:confide",
    "legacy:doubleteam",
    "legacy:fissure",
    "legacy:frustration",
    "legacy:hiddenpower",
    "legacy:mimic",
    "legacy:naturalgift",
    "legacy:return",
    "legacy:round",
    "legacy:secretpower",
    "legacy:skullbash",
    "legacy:snore",
    "legacy:swagger",
    "legacy:takedown",
    "legacy:toxic"
  ],
  "evolutions": [
    {
      "id": "onix_steelix",
      "variant": "trade",
      "result": "steelix",
      "consumeHeldItem": true,
      "learnableMoves": [],
      "requirements": [
        {
          "variant": "held_item",
          "itemCondition": "cobblemon:metal_coat"
        }
      ]
    }
  ],
  "riding": {
    "stats": {
      "SPEED": {
        "ranges": "20-40"
      },
      "ACCELERATION": {
        "ranges": "15-30"
      },
      "SKILL": {
        "ranges": "25-50"
      },
      "JUMP": {
        "ranges": "5-10"
      },
      "STAMINA": {
        "ranges": "25-50"
      }
    },
    "seats": [],
    "behaviour": {
      "key": "cobblemon:land/horse"
    }
  }
}